Improvement in boring tools



WILLIAM I. LA'IHROP,l 0F WEST WINSTED, CONNECTICUT.

Letters Patent No. 108,367, dated october 1s,"1a'7o.

IMPROVEMENT iN BoRlNe Toms.

The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern.'

Be it known that I, WILLIAM P. LATHROP, of West Winsted, in the county of Litchfield and State of Connecticut, have invented a new and useful Improvement in Boring Tools '-',--and I do hereby declare that the following isa fall and exact description of the same, reference being had to the accompanying drawing and to the letters of rcference marked thereon.

This invent-ion consists in certain details of' construction, which will be fullyl described hereinafter.

In the drawing- Figure l represents a. perspective view of my mortising tool, with the machinery for operating it;

Figure 2 represents a handle which has been cut by it; and

Figure 3 represents the tool itself detached,

To enable others skilled in the art to which my invention appcrtains to make and use the same, will now proceed to describe ,fully its construction and operation.

'lhis machine is especially designed for cutting the sockets for the tang in the handle of a case-knife.

A represents the bed-plate ot' the machine, which supports the operating devices.

I5 represents the main driving-wheel, which rests in suitable bearings, andl receives power in any proper manner.

C represents a crank-shaft,'furnished with a pulley, c, over which passes the driving-belt from wheel B.

Connected to the crank-shaft is the pitman 1),: which has connected to it the socket d, moving in bearings cl', as is shown in fig. 1.

Within the socket is placed the shank 'of the cutting tool, which is peculiarly formed with a series-of regularly enlarged cutting-points, as is shown in fig. 3.

E represents a carriage moving in suitable ways, which is provided withflanges or bars for the reception of the knife-handle which is to be cut.

One of these bars, f, is provided with set-screws, and the other with a screw-block, by means of which the handle is easily adjusted, and securely heldl in any desired position.

lhe operation is as follows:

The knife-handle to be cut is placed on the carriage and properly secured in place. The machine is now set in motion, and the tool', reciprocating rapidly, cuts a socket in the handle, the carriage being advanced as the work progresses.

By means of this construction a socket ot'. the dcsired forni and depth is obtained without weakening the wood, as is the case when the socket is burned out.

Havingthus fully described my invention,

\Vhat1 claim, and desire to secure byLett-ers Patcnt of the United States, is-

The reciprocating device described, consisting cssentially ot' 'the pitman D and tool E, in combination with the carriage F, as described.

This specification signed and witnesscd this v28th day of April, '1870. Y

i W. I. LATHROP.

Witnesses E. S. confond WALLACE PERSONS. 

